@jimcrane
You can try this product to adjust the volume on the HAP S1!
http://schiit.com/products/sys
You can try this product to adjust the volume on the HAP S1!
http://schiit.com/products/sys
Need Help to Understand Issue with Volume Control
@jimcrane You can try this product to adjust the volume on the HAP S1! http://schiit.com/products/sys |
The root cause of the problem is that the preamp section of the CAP-101 has an **extremely** high gain of 31.5 db. Meaning that it provides 31.5 db of gain when its volume control is set to max, which is how preamp gains are defined. It also has a slightly higher than average gain of 29 db in its power amplifier section. Also, the large change in volume you described that occurs between settings of less than 4 and more than 6.5 may reflect the fact that many preamp volume controls are intentionally designed to provide volume steps at very low settings that are much coarser than the step sizes that are provided over the rest of their range. Finally, the 2.2 volt figure for the maximum output voltage of the HAP-S1 may not be accurate; this document shows a 2.2K output impedance, but does not provide a spec for output voltage. One thing that might be worth trying is connecting the HAP-S1 to the tape input of the CAP-101. It is conceivable that the CAP-101 **might** provide less gain from its tape input than from its other line-level inputs, although relevant specs from which that could be determined don’t seem to be available. Aside from that possibility, as Yogiboy suggested you’ll have to insert an attenuator of some sort between the two components. In addition to the one he suggested, you might consider a Rothwell attenuator. Among the three attenuation values that are offered, my instinct in this case would be to go with the 15 db value. On the other hand, though, the use of a passive preamp or passive attenuator between the HAP-S1 and the CAP-101 raises some concern about impedance compatibility, given especially the rather high 2.2K output impedance of the HAP-S1 and the very low 10K input impedance of the Schiit. I have measured the unspecified input impedance of the 10 db version of the Rothwell attenuator as being in the vicinity of 30K, and I would expect the input impedance of the 15 db version to be even higher. So my guess is that the Rothwell would be a better choice for this application than the Schiit. Good luck. Regards, -- Al |